1921] 



Wheeler: Tachigalia Ants 



141 



FIG. 13. PSEUDOMYBMA DAMNOSA SP. NOV. 

 a. worker in lateral view ; b, head of same from above ; c, head of female from above. 



Head less shining, the fine punctures anteriorly and the 

 larger punctures on the vertex deeper and more conspicuous. 

 Gastric segments with large scattered punctures. 



Hairs and pubescence much as in the worker but the pubes- 

 cence decidedly longer and more dilute, so that the gaster appears 

 more shining. 



Color yellow, like the worker, but with more numerous and 

 more extensive spots. There is a brown spot on the middle of 

 the pronotum anteriorly, one on the mesonotum posteriorly, the 

 sides of the thorax have an irregular brown pattern, the petiole 

 is sometimes entirely brown, more often with the surface of 

 the node yellow; the ventral and anterodorsal portion of the 

 postpetiole, a broad band on each gastric segment above and a 

 large spot on each ventral sclerite, dark brown. All the femora 

 and the middle and hind tibise, except their tips and bases, are also 

 dark brown. In some specimens the dorsal banding of the 

 gaster is more indistinct, in others the gaster may be described 

 as dark brown with yellow posterior borders to the segments, less 

 frequently the dark brown spot on the mesonotum becomes a 

 Y with its branches extending to the anterior border of the 

 sclerite. The scutellum and postscutellum are usually dark brown 

 throughout. Wings pale fuscous, iridescent, with dark brown 

 veins and pterostigma. 



